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Finding the Fourth Proportional to 13,676.10, 20,493.65 and 10,551.44

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Solution

The fourth proportional to 13,676.10, 20,493.65 and 10,551.44 is: 15,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.10 : 20,493.65 = 10,551.44 : x
  2. Step 2: Convert to fraction form
    13,676.10/20,493.65 = 10,551.44/x
  3. Step 3: Cross multiply
    13,676.10x = 20,493.65 × 10,551.44
  4. Step 4: Simplify right side
    13,676.10x = 216,237,363.13
  5. Step 5: Solve for x
    x = 216,237,363.13/13,676.10
  6. Step 6: Final answer
    x = 15,811.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.